After the BO and a few decs, it may be easier to keep the beginning and end sts in stockinette st. Mark where your second pattern repeat begins and do the sts before that in st st. You can also graph it out with symbols to denote knits, decs and YOs, then when you BO 3, you'll be starting on the 5th st (because the 4th st was done in the last bound off stitch). Then you lose a stitch each side every RS row, so you just start one more stitch over; the end of the row is eaiser, just knit until you run out of stitches. By now though you should be able to read the pattern in your stitches and continue them on even losing the ones at the edges.